Effects of rice-duck farming system on Oryza sativa growth and its yield
稻鸭共育复合系统对水稻生长与产量的影响

The study showed that under rice-duck farming,the number of rice non-productive tiller reduced significantly,the ratio of its effective panicles increased by 8.08%,and its basal penetration light rate enhanced by 4.05%.At full-heading and maturing stages,the green leaf ratio under rice-duck farming was 6.01% and 10.65% higher than the control,and the leaf chlorophyll content was increased by 2.90% and 17.82%,respectively.Under rice-duck farming,the root vigour at full-heading stage and the photosynthesis capability of flag leaf at grain-filling stage were increased by 24.2% and 15.73%,which could accumulate more assimilative matter,and increase the harvest index and yield by 2.87% and 4.93%,respectively.